Voidervix Does the lot you're traveling to use the Off the Grid challenge? If so, you can remove it in Build mode, through Manage Worlds.
If that's not the problem, do you have an older save to revert to from before this happened? Here's how to look for one:
https://sims4.crinrict.com/eng/2014/09/recover-backup-save-game/
Otherwise, the only suggestion I have is to remove Realm of Magic and save your progress without it. The save would lose all RoM-related data but should be otherwise intact, and then you could reenable the pack and add back the content you wanted to use. Here's how to do it:
https://sims4.crinrict.com/eng/2022/06/world-appears-twice-on-world-map/
The problem covered in that post is different, but the fix is the same.
